260 



as separates, referrod to in the Bibliograpliy, the one out- 

 standing' feature along the southern Australian coast is thei 

 strongly-developed easterly current. This, coupled with the 

 absence of any knowledge as to a submerged westerly from 

 the Tasman Sea, makes it apparently difficult to account for 

 the live Nautilus in Foul Bay. Its position on the western 

 side of the* bay, however, suggests a westerly drift. The 

 Australia Directory (18), dealing with ocean currents on the 

 southern Australian coast, says: ''From November to April, 

 the easterly current abates in strength, and after a fresh 

 easterly wind it not unfrequently changes its direction to the 







Chart showing distribution and trend of Oce^in Currents 

 around Australian coast. 



[After L. Keith Ward.1 



north-westward." It goes on to point out how much the 

 currents are modified by winds. Dannevig (19) makes similar 

 observations of current reversal by wind in respect to the 

 Notonectian current on the eastern coast. With this know- 

 ledge of the influence of wind on currents, the explanation of 

 the last stages of the migration is more easily suggested. The 

 time when the Nautilus came ashore was during the period 

 when current reversal takes place. 



